North MS is a great option as well! 

Beyond trying to connect on this forum would recommend look in the BP Meet up section and checking out local DFW FB RE investor Facebook groups as well as Meetup.com and Eventbrite for local events. 

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

We stick to high quality neighborhoods and homes and are doing really well with it.

Work at establishing in-person relationships that will serve you well over time, not just one-and-done.

You want to make your investment as passive as possible and using a property manager allows you to do that.

Other banks allowed us to do our own in house valuations.

@Summer Shelton yes, FHA loans do allow this but make sure you speak with your lender about some of the trip ups from these loans.  

Quote from @Chase  I hope all is well!

It also allows the manager to work directly with the insurance company to resolve issues efficiently.In Texas, this is part of the standard Texas Board of Realtors Property Management Agreement and is considered an industry best practice.